Friday

February 27, 2015

February 27, 2015

Posted by **Anonymous** on Tuesday, March 20, 2012 at 8:08pm.

I got 61.25 but was not sure if it was correct...

- college algebra -
**Steve**, Wednesday, March 21, 2012 at 12:21pmy = kx^2

20 = k*16

k = 5/4

so, y = 5/4 x^2

y(7) = 5/4 * 49 = 61.25

Good job.

**Answer this Question**

**Related Questions**

College Algebra - if y vaires directly as x^2 and y=20 when x=4, find y when x=7...

Algebra, Need help with last part.Thank you - A single card is selected from an ...

Algebra - I distributed 3x^2+x-10=f(x) to find the zeroes. My book's answer was...

Math - I'm trying to perform the indicated operations, and reduce to lowest ...

Variation - I have few questions that I need checked please and could you help ...

Algebra 1B - Please help I am so confused... Question: supposed that y is ...

college Algebra - If y varies directly as x^2 and y=20 when x=4, find y when x=7...

Check my answers. Algebra - Can you please check my answers? Thanxs! Write an ...

College Algebra - y varies directly as the third power x and inversely as Z. If ...

college algebra - Solve each variation problem. n varies directly as q, and n= ...